Carbureter.



J. IVI. EVANS.

CARBURETER.

APPLICATION min 'AUG.20. |915.

Patented July 3, 1917.

Unrriin STATES -Piminisrr cierren. N,

JAMiis M. nviuvsor wiisrroivr,l CONNECTICUT, Assieivon 'ro EVANS ENGINE colu- 1=ANY, inconronarnm A consonancia or new YORK v oARBUnETEn.

Application aiea Augusta@ 19.15. serial No. 48,428.

1 o maw/wm it may concern.'

Be it known -that I, JAMES M. EVANS, a citizen of the United States, and a resident of Westport, county of Fairield, State of Connecticut, have invented certain new and useful Improvements in Carbureters, of which the following is a specification accompanied by drawings.

In my application, Serial No. l16,338, filed March 23, 1915, I described `an invention consisting of a device for conveying measured charges of liquid from a reservoir chamber into a mixing chamber in which the liquid so delivered was mixed with air or other gas. The uses, Ato which the device so described is adapted, include the mixing of hydrocarbons with air in internal comyat bustion engines, the enriching of gasesf'or illuminating, heating and other purposes, and in fact the mixing of any liquid, iinely separated or vaporized, with any gas for any purpose for which such an admixture of liquid and gas may be desired.

The object of this present invention is to improve upon the device of the aforeinem tioned application by providing convenient manually adjustable means for varying at will the relative amount of liquid to be mixed with the gas. V

The particular means which l have disclosed for regulating the mixture, comprise a 1oy-pass interposed between the reservoir chamber and the mixing chamber by means of which a portion or all of the liquid conveyed from the reservoir chamber is bypassed before it reaches 'the mixing chamber,

thereby reducing the amount of liquid dc-v livered into the mixing chamber, or entirely cutting' it ofi'.

Referring now to the drawing, reference numeral 1 designates the reservoir chamber, which may be supplied with liquid, preterablv under slight pressure. by any suitable means. The mixing chamber is shown at 2 and a suitable conveyor is employed for iconveying liquid from the irservoir chamberl l and delivering it into the mixing;r chamber 2. For this purpose l employ the. carrier herein shown` which comprises the disks 2i elA mounted ou thc sha'lt 5. Une of the disks,

- such lor instance, as disk il, is keyed to the Siiecication of Letters Patent.

'in the draw-ino rammed may 3, 1917.

ducing relative movement between it and the shaft periodically. The disks 3-4 are provided with iianges 6-7 respectively at the outer edge thereof, each flange extending slightly less than half the distance around the periphery of the disk and protruding transversely, so as to overlap the unilanged portion of the periphery of the adjacent disk. As a result of this construction, it is evident that by moving the disk 4- relatively to disk 3, a recess between the adjacent ends of the two flanges 6-7 may be produced at either of twopoints. n the position shown this recess occurs at the top of the disks at the entrance to the mixing chamber 2.

.The means -for periodically producing relative movement between the two disks to open and close the recesses above described maycomprise a three-armed lever, such as is shown at 8 in the drawing. One arm 9 of this lever may he pivotally connected to one of the disks relatively to thel other. This relative movement of the disks will eause the opening of one of the recesses formed `iu the periphery.thereof and will cause the closing` of the other such recess.

T'he operation ot the above described cai i'icr is as follows: v Assuming the parts to be in the position in which they appear in the drawing, it is seen thatas the disks continue iii their clockwise rotation, the roll. l2 will ride. iu one of the irregular poi-tions of the cam itl, so, that a 'recess will be formed between the flanges .6, 7 at the bottom of the carrier iii thel reservoir chamber, which rer-ess will yreceive therein a charge ol' liquid to be delivered into the mixing chamber. A further semirotatiou of the disks brings this recess to the entrance of the mixing chamber 2. at which time the roll l2 has reached the next 'irregular portiou'glzi' the cam lil. as a result el! which the recess containing the liquid is v 85 direction to thereby eileet the movement of f closed on entering the mixing chamber, thereby ejecting the liquid into the mixing chamber.

The above described mechanism is that of my prior application and constitutes per se no part of my present invention.

I will now' proceed to describe the improvement which constitutes Amy present inp` vention.

Adjacent the path of travel of the liquid carrier, I provide 'a by-pass indicated at 14,V

whereby a portion or all of the liquid conveyed by the carrier may be by-passed before it reaches the mixing chamber to theraby varyl the amount ofliquid delivered intthe mixing chamber or to shut olf entirely7 the deliveryot' the liquid. I also provide 1 this by-pass with a. suitable controlling device 15, by means o'l" which the amount of liquid to be by-passed may be nicely adjusted,.thereby adjusting the amount of liquid delivered into themixing chamber, and if desired, shutting eiftemporarily the delivery of any liquid into the mixing chamber. The controlling device 15 may be of any suitable form and I y preferably provide means, such as indicated at 16, extending to some convenient point, whereby the operator may adjust the controlling ldevice without changing his position. For example, f this improved carburetor is used in the internal combustion engine of a motor vehicle, the operating means for the controlling device 15 preferably extends'to the dash, so that the quality of the mixture may readily be varied by the driver without any inconvenience. A

Preferably I provide means. such as indicated at 17, for reconrcying the by-passed liquid into the liquid reservoir.

From the above, it is apparent that I have provided a convenient, simple and inexpensive means for controlling at will the amount of liquid to be delivered into the mixing chamber and thus controlling the quality of the mixture produced therein, also for shutting oft temporarily the delivery` of liquid.

While I haveshown and described. but .a single means for accomplishing the objects of my invention, it is to be understood that many changes may be made therein, without departing fromthe spirit of ,my invention,

"lVhat I claim is: ,15in

1. In a device of the character described, the combination of a reservoirgchamber for liquid, a mixingchamber, a. mvable carrier adapted to move from the reeel-voir chamber i to the mixing chamber to convy liquid from the one to theother, said device being providedintermediate said chambers with a passage-Way contiguous to the path of movement of said carrier, for by-passing a portion or all of the liquid `during` the move Ament of said carrier from one chamber to the other. v e

2. In adevice of the character described, the combination of a. reservoir'cliamber for liquid., a mixing chamber, a 'movable carrier adapted to more roinfthe reservoir chamber to the mixing chamber to convey liquid from the one to the other, saidwlevice being provided intcrmediate said chambers with a passage-.Way contiguous to the path of more ment of said carricrand with a manually adiustable valve for controlling the amount of liquid by-passed through said passageway during the movement of said carier from one chamber to the other, and therebyl determining the amount of liquid tobe de- `livered to said mixing chamber.

3. In a device of. the character described, the combination ofa reservoir chamber for liquid, a mixing chamber, a. movable carrier adapted to convey liquid from the resrvoir chamber and deliver it to the mixing chamber, said carrier comprising a rotatable disk having a recess at its outer edge adapted `to move from the reservoir chamber to the mixingchamber, and means llocated intermediate said chamber and `contiguous to the path` of movement of said recess for varying theamount of liquid delivered into the mixing chamber and for shutting it oi. l 4.. In a device of the character described, the combination. ofa reservoir chamber for liquid, a mixing chamber, a carrier or conveying liquid from the reservoir chamber and delivering it to the mixing chamber, said carrier comprising rotatable disk .having a recess at its outer edge, and means located adjacent the path. of travel oit' saidv carrier for by-passing a portion or all of the liquid so conveycd.

5. In a device of the character descriliied, ythe combination of a reservoir chamber for liquid, a mixing chamber, a carrier for conveying'liquid from the reservoir chamber and delivering it to the mixing chambrer, said carrier comprising rotatable diskl having a recess at its outer edge, and inanually adjustable means located adjacent the path of travel of the carrier for liv-passing adjusted portions or all iof the liquid 'for `the purpose described.

In testimony whereof I have signed 'this oeciiication in the presence of two subscribL ing witnesses JAMES M. EVANS.

Witnesses:

HENRY IVAM), RALPH Knaur.

lib 

